5656656655650 has 384 divisors, whose sum is σ = 19826831001600. Its totient is φ = 1027887667200.

The previous prime is 5656656655649. The next prime is 5656656655651. The reversal of 5656656655650 is 565566566565.

It is an interprime number because it is at equal distance from previous prime (5656656655649) and next prime (5656656655651).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (5656656655651) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1861446 + ... + 3844254.

It is an arithmetic number, because the mean of its divisors is an integer number (51632372400).

Almost surely, 2^{5656656655650} is an apocalyptic number.

5656656655650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5656656655650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9913415500800).

5656656655650 is an abundant number, since it is smaller than the sum of its proper divisors (14170174345950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5656656655650 is a wasteful number, since it uses less digits than its factorization.

5656656655650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982874 (or 1982869 counting only the distinct ones).

The product of its (nonzero) digits is 729000000, while the sum is 66.

The spelling of 5656656655650 in words is "five trillion, six hundred fifty-six billion, six hundred fifty-six million, six hundred fifty-five thousand, six hundred fifty".